64306823 has 16 divisors (see below), whose sum is σ = 74973696. Its totient is φ = 54021600.

The previous prime is 64306771. The next prime is 64306859. The reversal of 64306823 is 32860346.

It is a cyclic number.

It is not a de Polignac number, because 64306823 - 2¹⁰ = 64305799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64306823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64303823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87365 + ... + 88097.

It is an arithmetic number, because the mean of its divisors is an integer number (4685856).

Almost surely, 2^64306823 is an apocalyptic number.

64306823 is a deficient number, since it is larger than the sum of its proper divisors (10666873).

64306823 is a wasteful number, since it uses less digits than its factorization.

64306823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 64306823 is about 8019.1535089434. The cubic root of 64306823 is about 400.6381958071.

The spelling of 64306823 in words is "sixty-four million, three hundred six thousand, eight hundred twenty-three".